Former Western Australia Rural Woman of the Year Catherine Marriott made a complaint to the party in February this year and said she was “dismayed” after being notified of its findings, which reached no conclusion after months of investigation.

She alleged misconduct by Mr Joyce in an incident at a Canberra hotel in August last year.

Mr Joyce has denied any wrongdoing.

Ms Marriott wanted her complaint to remain anonymous but was identified in the media.

I’m sooooo looking forward to this event, @TraceySpicer is coming to WA to share her wisdom, beautiful nature and thoughts on the future. Who’s coming along. I’ll see you there. https://t.co/snQnLUcE6I

She said the report found she was "forthright, believable, open and genuinely upset".

"I'm extremely disappointed that after eight months of waiting, three trips to the east coast at my own expense to meet with the Party, my name and confidential complaint being leaked to the national media and my personal life being upended, the National Party have reached a 'no conclusion' verdict," Ms Marriott said.

"While dismayed at the finding, I am not surprised as the party never had the external processes in place to deal with a complaint of sexual harassment by a member of Parliament,